In recent years, scientists are uncovering new insights into the vagus nerve, a key player in communication between the gut ...

Abu-Hayyeh et al. have shown that levels of epiallopregnanolone sulphate—a sulphated progesterone metabolite—are above normal in patients with intrahepatic cholestasis of pregnancy. At these levels, ...

Proceedings of the National Academy of Sciences of the United States of America, Vol. 114, No. 4 (January 24, 2017), pp. E506-E513 (8 pages) The intestinal epithelium is continuously renewed by ...

Homeostasis is the ability to maintain a relatively stable internal state that persists despite changes in the world outside. All living organisms, from plants to puppies to people, must regulate ...

Living things have a remarkable ability to function and thrive in a variety of environments that are constantly changing. Despite exposure to wildly different temperatures during heat waves and cold ...

The endocrine system secretes hormones into the bloodstream from glands throughout the body. Hormones travel in the blood stream to specific target organs, where they have an effect. Hormones in human ...

During exercise, you might be sweating and breathing heavily. These are two of many signs that your body is maintaining homeostasis, also known as your body’s equilibrium. Sustaining homeostasis is ...

Try these interactive flashcards based on GCSE biology past papers. By working your way through the flashcards created by experts, you can prepare for your biology exams and make your revision more ...